Electronic wake-up device and wake-up method thereof

Abstract

An electronic wake-up device and a wake-up method thereof are provided. The electronic wake-up device includes: a power switch device, an electronic device, a gravity sensor, and a wake-up circuit. The wake-up circuit is coupled to the gravity sensor and the electronic device. The wake-up circuit is configured to generate an execution signal according to a sensing activation signal, and generate an electronic device control signal according to the execution signal and a gravity signal to wake up the electronic device.

What is claimed is: 
     
       1. An electronic wake-up device, comprising:
 a power switch device configured to generate a power switch signal according to an input operation; 
 an electronic device coupled to the power switch device, wherein the electronic device is configured to receive the power switch signal to be activated and generate a setting signal and a sensing activation signal; 
 a gravity sensor coupled to the electronic device, wherein the gravity sensor is configured to receive the setting signal to enter an initial activation state, and wherein the gravity sensor generates a gravity signal according to a gravity change of the electronic device; and 
 a wake-up circuit coupled to the electronic device and the gravity sensor, wherein the wake-up circuit is configured to receive the sensing activation signal and generate an execution signal according to the sensing activation signal, and generate an electronic device control signal according to the execution signal and the gravity signal to wake up the electronic device. 
 
     
     
       2. The electronic wake-up device according to  claim 1 , wherein the wake-up circuit comprises:
 a flip-flop, wherein a first input terminal of the flip-flop is connected to a power supply high electrical potential, wherein a second input terminal of the flip-flop is connected to the electronic device, and wherein the flip-flop is configured to output the execution signal according to the sensing activation signal; and 
 a data multiplexer coupled to the flip-flop, wherein the data multiplexer is configured to receive the execution signal to enter an operating state, wherein a first input terminal of the data multiplexer is connected to a ground electrical potential, wherein a second input terminal of the data multiplexer is coupled to the gravity sensor, and wherein the data multiplexer generates the electronic device control signal according to the gravity signal to wake up the electronic device when the data multiplexer is in the operating state. 
 
     
     
       3. The electronic wake-up device according to  claim 2 , wherein a power supply high electrical potential of the electronic device has a same electrical potential as the power supply high electrical potential connected to the first input terminal of the flip-flop. 
     
     
       4. The electronic wake-up device according to  claim 1 , wherein the power switch device is coupled to the electronic device, wherein the power switch signal comprises a power on signal and a power off signal, and wherein the sensing activation signal is at a low electrical potential when the electronic device receives the power off signal. 
     
     
       5. The electronic wake-up device according to  claim 1 , wherein the gravity signal is at a low electrical potential when the gravity sensor is in the initial activation state. 
     
     
       6. The electronic wake-up device according to  claim 1 , wherein the wake-up circuit wakes up the electronic device when the electronic device control signal is at a low electrical potential. 
     
     
       7. The electronic wake-up device according to  claim 1 , wherein the gravity sensor is connected to the electronic device through an interface module, and wherein the interface module comprises an integrated circuit bus. 
     
     
       8. The electronic wake-up device according to  claim 1 , wherein the gravity sensor is connected to the electronic device through an interface module, and wherein the interface module comprises a serial peripheral interface. 
     
     
       9. A method of waking up electronic device, comprising:
 using a power switch device to generate a power switch signal according to an input operation; 
 using an electronic device to receive the power switch signal to be activated, and generating a setting signal and a sensing activation signal; 
 using a gravity sensor to receive the setting signal to enter an initial activation state, and generating a gravity signal according to a gravity change of the electronic device; and 
 using a wake-up circuit to generate an electronic device control signal to wake up the electronic device according to the gravity signal and the sensing activation signal, comprising: 
 using a flip-flop to output an execution signal according to the sensing activation signal; 
 using a data multiplexer to receive the execution signal to enter an operating state; and 
 using the data multiplexer to generate the electronic device control signal to wake up the electronic device according to the gravity signal when the data multiplexer is in the operating state. 
 
     
     
       10. The method of waking up electronic device as described in  claim 9 , wherein the power switch device is coupled to the electronic device, wherein the power switch signal comprises a power on signal and a power off signal, and wherein the sensing activation signal is at a low electrical potential when the electronic device receives the power off signal.